Merge rsync://rsync.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6

23 files changed, 236 insertions, 152 deletions

diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile
index 0cc0995b81b0..803858e86160 100644
--- a/arch/powerpc/kernel/Makefile
+++ b/arch/powerpc/kernel/Makefile
@@ -20,7 +20,7 @@ obj-$(CONFIG_PPC64)		+= setup_64.o binfmt_elf32.o sys_ppc32.o \
 				   firmware.o sysfs.o
 obj-$(CONFIG_PPC64)		+= vdso64/
 obj-$(CONFIG_ALTIVEC)		+= vecemu.o vector.o
-obj-$(CONFIG_POWER4)		+= idle_power4.o
+obj-$(CONFIG_PPC_970_NAP)	+= idle_power4.o
 obj-$(CONFIG_PPC_OF)		+= of_device.o prom_parse.o
 procfs-$(CONFIG_PPC64)		:= proc_ppc64.o
 obj-$(CONFIG_PROC_FS)		+= $(procfs-y)
diff --git a/arch/powerpc/kernel/asm-offsets.c b/arch/powerpc/kernel/asm-offsets.c
index 54b48f330051..8f85c5e8a55a 100644
--- a/arch/powerpc/kernel/asm-offsets.c
+++ b/arch/powerpc/kernel/asm-offsets.c
@@ -91,6 +91,7 @@ int main(void)
 #endif /* CONFIG_PPC64 */
 
 	DEFINE(TI_FLAGS, offsetof(struct thread_info, flags));
+	DEFINE(TI_LOCAL_FLAGS, offsetof(struct thread_info, local_flags));
 	DEFINE(TI_PREEMPT, offsetof(struct thread_info, preempt_count));
 	DEFINE(TI_TASK, offsetof(struct thread_info, task));
 #ifdef CONFIG_PPC32
diff --git a/arch/powerpc/kernel/entry_32.S b/arch/powerpc/kernel/entry_32.S
index b3a979467225..8866fd26c6b9 100644
--- a/arch/powerpc/kernel/entry_32.S
+++ b/arch/powerpc/kernel/entry_32.S
@@ -128,37 +128,36 @@ transfer_to_handler:
 	stw	r12,4(r11)
 #endif
 	b	3f
+
 2:	/* if from kernel, check interrupted DOZE/NAP mode and
          * check for stack overflow
          */
+	lwz	r9,THREAD_INFO-THREAD(r12)
+	cmplw	r1,r9			/* if r1 <= current->thread_info */
+	ble-	stack_ovf		/* then the kernel stack overflowed */
+5:
 #ifdef CONFIG_6xx
-	mfspr	r11,SPRN_HID0
-	mtcr	r11
-BEGIN_FTR_SECTION
-	bt-	8,4f			/* Check DOZE */
-END_FTR_SECTION_IFSET(CPU_FTR_CAN_DOZE)
-BEGIN_FTR_SECTION
-	bt-	9,4f			/* Check NAP */
-END_FTR_SECTION_IFSET(CPU_FTR_CAN_NAP)
+	tophys(r9,r9)			/* check local flags */
+	lwz	r12,TI_LOCAL_FLAGS(r9)
+	mtcrf	0x01,r12
+	bt-	31-TLF_NAPPING,4f
 #endif /* CONFIG_6xx */
 	.globl transfer_to_handler_cont
 transfer_to_handler_cont:
-	lwz	r11,THREAD_INFO-THREAD(r12)
-	cmplw	r1,r11			/* if r1 <= current->thread_info */
-	ble-	stack_ovf		/* then the kernel stack overflowed */
 3:
 	mflr	r9
 	lwz	r11,0(r9)		/* virtual address of handler */
 	lwz	r9,4(r9)		/* where to go when done */
-	FIX_SRR1(r10,r12)
 	mtspr	SPRN_SRR0,r11
 	mtspr	SPRN_SRR1,r10
 	mtlr	r9
 	SYNC
 	RFI				/* jump to handler, enable MMU */
 
-#ifdef CONFIG_6xx	
-4:	b	power_save_6xx_restore
+#ifdef CONFIG_6xx
+4:	rlwinm	r12,r12,0,~_TLF_NAPPING
+	stw	r12,TI_LOCAL_FLAGS(r9)
+	b	power_save_6xx_restore
 #endif
 
 /*
@@ -167,10 +166,10 @@ transfer_to_handler_cont:
  */
 stack_ovf:
 	/* sometimes we use a statically-allocated stack, which is OK. */
-	lis	r11,_end@h
-	ori	r11,r11,_end@l
-	cmplw	r1,r11
-	ble	3b			/* r1 <= &_end is OK */
+	lis	r12,_end@h
+	ori	r12,r12,_end@l
+	cmplw	r1,r12
+	ble	5b			/* r1 <= &_end is OK */
 	SAVE_NVGPRS(r11)
 	addi	r3,r1,STACK_FRAME_OVERHEAD
 	lis	r1,init_thread_union@ha
diff --git a/arch/powerpc/kernel/head_64.S b/arch/powerpc/kernel/head_64.S
index a5ae04a57c78..b7d140430a41 100644
--- a/arch/powerpc/kernel/head_64.S
+++ b/arch/powerpc/kernel/head_64.S
@@ -376,11 +376,28 @@ label##_common:						\
 	bl	hdlr;					\
 	b	.ret_from_except
 
+/*
+ * Like STD_EXCEPTION_COMMON, but for exceptions that can occur
+ * in the idle task and therefore need the special idle handling.
+ */
+#define STD_EXCEPTION_COMMON_IDLE(trap, label, hdlr)	\
+	.align	7;					\
+	.globl label##_common;				\
+label##_common:						\
+	EXCEPTION_PROLOG_COMMON(trap, PACA_EXGEN);	\
+	FINISH_NAP;					\
+	DISABLE_INTS;					\
+	bl	.save_nvgprs;				\
+	addi	r3,r1,STACK_FRAME_OVERHEAD;		\
+	bl	hdlr;					\
+	b	.ret_from_except
+
 #define STD_EXCEPTION_COMMON_LITE(trap, label, hdlr)	\
 	.align	7;					\
 	.globl label##_common;				\
 label##_common:						\
 	EXCEPTION_PROLOG_COMMON(trap, PACA_EXGEN);	\
+	FINISH_NAP;					\
 	DISABLE_INTS;					\
 	bl	.ppc64_runlatch_on;			\
 	addi	r3,r1,STACK_FRAME_OVERHEAD;		\
@@ -388,6 +405,25 @@ label##_common:						\
 	b	.ret_from_except_lite
 
 /*
+ * When the idle code in power4_idle puts the CPU into NAP mode,
+ * it has to do so in a loop, and relies on the external interrupt
+ * and decrementer interrupt entry code to get it out of the loop.
+ * It sets the _TLF_NAPPING bit in current_thread_info()->local_flags
+ * to signal that it is in the loop and needs help to get out.
+ */
+#ifdef CONFIG_PPC_970_NAP
+#define FINISH_NAP				\
+BEGIN_FTR_SECTION				\
+	clrrdi	r11,r1,THREAD_SHIFT;		\
+	ld	r9,TI_LOCAL_FLAGS(r11);		\
+	andi.	r10,r9,_TLF_NAPPING;		\
+	bnel	power4_fixup_nap;		\
+END_FTR_SECTION_IFSET(CPU_FTR_CAN_NAP)
+#else
+#define FINISH_NAP
+#endif
+
+/*
  * Start of pSeries system interrupt routines
  */
 	. = 0x100
@@ -772,6 +808,7 @@ hardware_interrupt_iSeries_masked:
 	.globl machine_check_common
 machine_check_common:
 	EXCEPTION_PROLOG_COMMON(0x200, PACA_EXMC)
+	FINISH_NAP
 	DISABLE_INTS
 	bl	.save_nvgprs
 	addi	r3,r1,STACK_FRAME_OVERHEAD
@@ -783,7 +820,7 @@ machine_check_common:
 	STD_EXCEPTION_COMMON(0xb00, trap_0b, .unknown_exception)
 	STD_EXCEPTION_COMMON(0xd00, single_step, .single_step_exception)
 	STD_EXCEPTION_COMMON(0xe00, trap_0e, .unknown_exception)
-	STD_EXCEPTION_COMMON(0xf00, performance_monitor, .performance_monitor_exception)
+	STD_EXCEPTION_COMMON_IDLE(0xf00, performance_monitor, .performance_monitor_exception)
 	STD_EXCEPTION_COMMON(0x1300, instruction_breakpoint, .instruction_breakpoint_exception)
 #ifdef CONFIG_ALTIVEC
 	STD_EXCEPTION_COMMON(0x1700, altivec_assist, .altivec_assist_exception)
@@ -1034,6 +1071,7 @@ unrecov_slb:
 	.globl hardware_interrupt_entry
 hardware_interrupt_common:
 	EXCEPTION_PROLOG_COMMON(0x500, PACA_EXGEN)
+	FINISH_NAP
 hardware_interrupt_entry:
 	DISABLE_INTS
 	bl	.ppc64_runlatch_on
@@ -1041,6 +1079,15 @@ hardware_interrupt_entry:
 	bl	.do_IRQ
 	b	.ret_from_except_lite
 
+#ifdef CONFIG_PPC_970_NAP
+power4_fixup_nap:
+	andc	r9,r9,r10
+	std	r9,TI_LOCAL_FLAGS(r11)
+	ld	r10,_LINK(r1)		/* make idle task do the */
+	std	r10,_NIP(r1)		/* equivalent of a blr */
+	blr
+#endif
+
 	.align	7
 	.globl alignment_common
 alignment_common:
diff --git a/arch/powerpc/kernel/idle.c b/arch/powerpc/kernel/idle.c
index e9f321d74d85..d491052c8e0c 100644
--- a/arch/powerpc/kernel/idle.c
+++ b/arch/powerpc/kernel/idle.c
@@ -50,9 +50,9 @@ void cpu_idle(void)
 
 	set_thread_flag(TIF_POLLING_NRFLAG);
 	while (1) {
-		ppc64_runlatch_off();
-
 		while (!need_resched() && !cpu_should_die()) {
+			ppc64_runlatch_off();
+
 			if (ppc_md.power_save) {
 				clear_thread_flag(TIF_POLLING_NRFLAG);
 				/*
diff --git a/arch/powerpc/kernel/idle_6xx.S b/arch/powerpc/kernel/idle_6xx.S
index 12a4efbaa08f..b45fa0e37212 100644
--- a/arch/powerpc/kernel/idle_6xx.S
+++ b/arch/powerpc/kernel/idle_6xx.S
@@ -22,8 +22,6 @@
 #include <asm/ppc_asm.h>
 #include <asm/asm-offsets.h>
 
-#undef DEBUG
-
 	.text
 
 /*
@@ -109,12 +107,6 @@ BEGIN_FTR_SECTION
 	dcbf	0,r4
 	dcbf	0,r4
 END_FTR_SECTION_IFSET(CPU_FTR_NAP_DISABLE_L2_PR)
-#ifdef DEBUG
-	lis	r6,nap_enter_count@ha
-	lwz	r4,nap_enter_count@l(r6)
-	addi	r4,r4,1
-	stw	r4,nap_enter_count@l(r6)
-#endif	
 2:
 BEGIN_FTR_SECTION
 	/* Go to low speed mode on some 750FX */
@@ -144,48 +136,42 @@ BEGIN_FTR_SECTION
 	DSSALL
 	sync
 END_FTR_SECTION_IFSET(CPU_FTR_ALTIVEC)
+	rlwinm	r9,r1,0,0,31-THREAD_SHIFT	/* current thread_info */
+	lwz	r8,TI_LOCAL_FLAGS(r9)	/* set napping bit */
+	ori	r8,r8,_TLF_NAPPING	/* so when we take an exception */
+	stw	r8,TI_LOCAL_FLAGS(r9)	/* it will return to our caller */
 	mfmsr	r7
 	ori	r7,r7,MSR_EE
 	oris	r7,r7,MSR_POW@h
-	sync
-	isync
+1:	sync
 	mtmsr	r7
 	isync
-	sync
-	blr
-	
+	b	1b
+
 /*
  * Return from NAP/DOZE mode, restore some CPU specific registers,
  * we are called with DR/IR still off and r2 containing physical
- * address of current.
+ * address of current.  R11 points to the exception frame (physical
+ * address).  We have to preserve r10.
  */
 _GLOBAL(power_save_6xx_restore)
-	mfspr	r11,SPRN_HID0
-	rlwinm.	r11,r11,0,10,8	/* Clear NAP & copy NAP bit !state to cr1 EQ */
-	cror	4*cr1+eq,4*cr0+eq,4*cr0+eq
-BEGIN_FTR_SECTION
-	rlwinm	r11,r11,0,9,7	/* Clear DOZE */
-END_FTR_SECTION_IFSET(CPU_FTR_CAN_DOZE)
-	mtspr	SPRN_HID0, r11
+	lwz	r9,_LINK(r11)		/* interrupted in ppc6xx_idle: */
+	stw	r9,_NIP(r11)		/* make it do a blr */
 
-#ifdef DEBUG
-	beq	cr1,1f
-	lis	r11,(nap_return_count-KERNELBASE)@ha
-	lwz	r9,nap_return_count@l(r11)
-	addi	r9,r9,1
-	stw	r9,nap_return_count@l(r11)
-1:
-#endif
-	
-	rlwinm	r9,r1,0,0,18
-	tophys(r9,r9)
-	lwz	r11,TI_CPU(r9)
+#ifdef CONFIG_SMP
+	mfspr	r12,SPRN_SPRG3
+	lwz	r11,TI_CPU(r12)		/* get cpu number * 4 */
 	slwi	r11,r11,2
+#else
+	li	r11,0
+#endif
 	/* Todo make sure all these are in the same page
-	 * and load r22 (@ha part + CPU offset) only once
+	 * and load r11 (@ha part + CPU offset) only once
 	 */
 BEGIN_FTR_SECTION
-	beq	cr1,1f
+	mfspr	r9,SPRN_HID0
+	andis.	r9,r9,HID0_NAP@h
+	beq	1f
 	addis	r9,r11,(nap_save_msscr0-KERNELBASE)@ha
 	lwz	r9,nap_save_msscr0@l(r9)
 	mtspr	SPRN_MSSCR0, r9
@@ -210,10 +196,3 @@ _GLOBAL(nap_save_hid1)
 
 _GLOBAL(powersave_lowspeed)
 	.long	0
-
-#ifdef DEBUG
-_GLOBAL(nap_enter_count)
-	.space	4
-_GLOBAL(nap_return_count)
-	.space	4
-#endif
diff --git a/arch/powerpc/kernel/idle_power4.S b/arch/powerpc/kernel/idle_power4.S
index 6dad1c02496e..d85c7c938eed 100644
--- a/arch/powerpc/kernel/idle_power4.S
+++ b/arch/powerpc/kernel/idle_power4.S
@@ -35,12 +35,16 @@ BEGIN_FTR_SECTION
 	DSSALL
 	sync
 END_FTR_SECTION_IFSET(CPU_FTR_ALTIVEC)
+	clrrdi	r9,r1,THREAD_SHIFT	/* current thread_info */
+	ld	r8,TI_LOCAL_FLAGS(r9)	/* set napping bit */
+	ori	r8,r8,_TLF_NAPPING	/* so when we take an exception */
+	std	r8,TI_LOCAL_FLAGS(r9)	/* it will return to our caller */
 	mfmsr	r7
 	ori	r7,r7,MSR_EE
 	oris	r7,r7,MSR_POW@h
-	sync
+1:	sync
 	isync
 	mtmsrd	r7
 	isync
-	sync
-	blr
+	b	1b
+
diff --git a/arch/powerpc/kernel/iommu.c b/arch/powerpc/kernel/iommu.c
index d9a7fdef59b9..4eba60a32890 100644
--- a/arch/powerpc/kernel/iommu.c
+++ b/arch/powerpc/kernel/iommu.c
@@ -61,6 +61,7 @@ __setup("iommu=", setup_iommu);
 static unsigned long iommu_range_alloc(struct iommu_table *tbl,
                                        unsigned long npages,
                                        unsigned long *handle,
+                                       unsigned long mask,
                                        unsigned int align_order)
 { 
 	unsigned long n, end, i, start;
@@ -97,9 +98,21 @@ static unsigned long iommu_range_alloc(struct iommu_table *tbl,
 	 */
 	if (start >= limit)
 		start = largealloc ? tbl->it_largehint : tbl->it_hint;
-	
+
  again:
 
+	if (limit + tbl->it_offset > mask) {
+		limit = mask - tbl->it_offset + 1;
+		/* If we're constrained on address range, first try
+		 * at the masked hint to avoid O(n) search complexity,
+		 * but on second pass, start at 0.
+		 */
+		if ((start & mask) >= limit || pass > 0)
+			start = 0;
+		else
+			start &= mask;
+	}
+
 	n = find_next_zero_bit(tbl->it_map, limit, start);
 
 	/* Align allocation */
@@ -150,14 +163,14 @@ static unsigned long iommu_range_alloc(struct iommu_table *tbl,
 
 static dma_addr_t iommu_alloc(struct iommu_table *tbl, void *page,
 		       unsigned int npages, enum dma_data_direction direction,
-		       unsigned int align_order)
+		       unsigned long mask, unsigned int align_order)
 {
 	unsigned long entry, flags;
 	dma_addr_t ret = DMA_ERROR_CODE;
-	
+
 	spin_lock_irqsave(&(tbl->it_lock), flags);
 
-	entry = iommu_range_alloc(tbl, npages, NULL, align_order);
+	entry = iommu_range_alloc(tbl, npages, NULL, mask, align_order);
 
 	if (unlikely(entry == DMA_ERROR_CODE)) {
 		spin_unlock_irqrestore(&(tbl->it_lock), flags);
@@ -236,7 +249,7 @@ static void iommu_free(struct iommu_table *tbl, dma_addr_t dma_addr,
 
 int iommu_map_sg(struct device *dev, struct iommu_table *tbl,
 		struct scatterlist *sglist, int nelems,
-		enum dma_data_direction direction)
+		unsigned long mask, enum dma_data_direction direction)
 {
 	dma_addr_t dma_next = 0, dma_addr;
 	unsigned long flags;
@@ -274,7 +287,7 @@ int iommu_map_sg(struct device *dev, struct iommu_table *tbl,
 		vaddr = (unsigned long)page_address(s->page) + s->offset;
 		npages = PAGE_ALIGN(vaddr + slen) - (vaddr & PAGE_MASK);
 		npages >>= PAGE_SHIFT;
-		entry = iommu_range_alloc(tbl, npages, &handle, 0);
+		entry = iommu_range_alloc(tbl, npages, &handle, mask >> PAGE_SHIFT, 0);
 
 		DBG("  - vaddr: %lx, size: %lx\n", vaddr, slen);
 
@@ -479,7 +492,8 @@ void iommu_free_table(struct device_node *dn)
  * byte within the page as vaddr.
  */
 dma_addr_t iommu_map_single(struct iommu_table *tbl, void *vaddr,
-		size_t size, enum dma_data_direction direction)
+		size_t size, unsigned long mask,
+		enum dma_data_direction direction)
 {
 	dma_addr_t dma_handle = DMA_ERROR_CODE;
 	unsigned long uaddr;
@@ -492,7 +506,8 @@ dma_addr_t iommu_map_single(struct iommu_table *tbl, void *vaddr,
 	npages >>= PAGE_SHIFT;
 
 	if (tbl) {
-		dma_handle = iommu_alloc(tbl, vaddr, npages, direction, 0);
+		dma_handle = iommu_alloc(tbl, vaddr, npages, direction,
+					 mask >> PAGE_SHIFT, 0);
 		if (dma_handle == DMA_ERROR_CODE) {
 			if (printk_ratelimit())  {
 				printk(KERN_INFO "iommu_alloc failed, "
@@ -521,7 +536,7 @@ void iommu_unmap_single(struct iommu_table *tbl, dma_addr_t dma_handle,
  * to the dma address (mapping) of the first page.
  */
 void *iommu_alloc_coherent(struct iommu_table *tbl, size_t size,
-		dma_addr_t *dma_handle, gfp_t flag)
+		dma_addr_t *dma_handle, unsigned long mask, gfp_t flag)
 {
 	void *ret = NULL;
 	dma_addr_t mapping;
@@ -551,7 +566,8 @@ void *iommu_alloc_coherent(struct iommu_table *tbl, size_t size,
 	memset(ret, 0, size);
 
 	/* Set up tces to cover the allocated range */
-	mapping = iommu_alloc(tbl, ret, npages, DMA_BIDIRECTIONAL, order);
+	mapping = iommu_alloc(tbl, ret, npages, DMA_BIDIRECTIONAL,
+			      mask >> PAGE_SHIFT, order);
 	if (mapping == DMA_ERROR_CODE) {
 		free_pages((unsigned long)ret, order);
 		ret = NULL;
diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c
index bb5c9501234c..57d560c68897 100644
--- a/arch/powerpc/kernel/irq.c
+++ b/arch/powerpc/kernel/irq.c
@@ -272,18 +272,26 @@ unsigned int virt_irq_to_real_map[NR_IRQS];
  * Don't use virtual irqs 0, 1, 2 for devices.
  * The pcnet32 driver considers interrupt numbers < 2 to be invalid,
  * and 2 is the XICS IPI interrupt.
- * We limit virtual irqs to 17 less than NR_IRQS so that when we
- * offset them by 16 (to reserve the first 16 for ISA interrupts)
- * we don't end up with an interrupt number >= NR_IRQS.
+ * We limit virtual irqs to __irq_offet_value less than virt_irq_max so
+ * that when we offset them we don't end up with an interrupt
+ * number >= virt_irq_max.
  */
 #define MIN_VIRT_IRQ	3
-#define MAX_VIRT_IRQ	(NR_IRQS - NUM_ISA_INTERRUPTS - 1)
-#define NR_VIRT_IRQS	(MAX_VIRT_IRQ - MIN_VIRT_IRQ + 1)
+
+unsigned int virt_irq_max;
+static unsigned int max_virt_irq;
+static unsigned int nr_virt_irqs;
 
 void
 virt_irq_init(void)
 {
 	int i;
+
+	if ((virt_irq_max == 0) || (virt_irq_max > (NR_IRQS - 1)))
+		virt_irq_max = NR_IRQS - 1;
+	max_virt_irq = virt_irq_max - __irq_offset_value;
+	nr_virt_irqs = max_virt_irq - MIN_VIRT_IRQ + 1;
+
 	for (i = 0; i < NR_IRQS; i++)
 		virt_irq_to_real_map[i] = UNDEFINED_IRQ;
 }
@@ -308,17 +316,17 @@ int virt_irq_create_mapping(unsigned int real_irq)
 		return real_irq;
 	}
 
-	/* map to a number between MIN_VIRT_IRQ and MAX_VIRT_IRQ */
+	/* map to a number between MIN_VIRT_IRQ and max_virt_irq */
 	virq = real_irq;
-	if (virq > MAX_VIRT_IRQ)
-		virq = (virq % NR_VIRT_IRQS) + MIN_VIRT_IRQ;
+	if (virq > max_virt_irq)
+		virq = (virq % nr_virt_irqs) + MIN_VIRT_IRQ;
 
 	/* search for this number or a free slot */
 	first_virq = virq;
 	while (virt_irq_to_real_map[virq] != UNDEFINED_IRQ) {
 		if (virt_irq_to_real_map[virq] == real_irq)
 			return virq;
-		if (++virq > MAX_VIRT_IRQ)
+		if (++virq > max_virt_irq)
 			virq = MIN_VIRT_IRQ;
 		if (virq == first_virq)
 			goto nospace;	/* oops, no free slots */
@@ -330,8 +338,8 @@ int virt_irq_create_mapping(unsigned int real_irq)
  nospace:
 	if (!warned) {
 		printk(KERN_CRIT "Interrupt table is full\n");
-		printk(KERN_CRIT "Increase NR_IRQS (currently %d) "
-		       "in your kernel sources and rebuild.\n", NR_IRQS);
+		printk(KERN_CRIT "Increase virt_irq_max (currently %d) "
+		       "in your kernel sources and rebuild.\n", virt_irq_max);
 		warned = 1;
 	}
 	return NO_IRQ;
@@ -349,8 +357,8 @@ unsigned int real_irq_to_virt_slowpath(unsigned int real_irq)
 
 	virq = real_irq;
 
-	if (virq > MAX_VIRT_IRQ)
-		virq = (virq % NR_VIRT_IRQS) + MIN_VIRT_IRQ;
+	if (virq > max_virt_irq)
+		virq = (virq % nr_virt_irqs) + MIN_VIRT_IRQ;
 
 	first_virq = virq;
 
@@ -360,7 +368,7 @@ unsigned int real_irq_to_virt_slowpath(unsigned int real_irq)
 
 		virq++;
 
-		if (virq >= MAX_VIRT_IRQ)
+		if (virq >= max_virt_irq)
 			virq = 0;
 
 	} while (first_virq != virq);
diff --git a/arch/powerpc/kernel/kprobes.c b/arch/powerpc/kernel/kprobes.c
index ad7a90212204..856ef1a832b9 100644
--- a/arch/powerpc/kernel/kprobes.c
+++ b/arch/powerpc/kernel/kprobes.c
@@ -88,7 +88,7 @@ void __kprobes arch_remove_kprobe(struct kprobe *p)
 	mutex_unlock(&kprobe_mutex);
 }
 
-static inline void prepare_singlestep(struct kprobe *p, struct pt_regs *regs)
+static void __kprobes prepare_singlestep(struct kprobe *p, struct pt_regs *regs)
 {
 	kprobe_opcode_t insn = *p->ainsn.insn;
 
@@ -101,21 +101,21 @@ static inline void prepare_singlestep(struct kprobe *p, struct pt_regs *regs)
 		regs->nip = (unsigned long)p->ainsn.insn;
 }
 
-static inline void save_previous_kprobe(struct kprobe_ctlblk *kcb)
+static void __kprobes save_previous_kprobe(struct kprobe_ctlblk *kcb)
 {
 	kcb->prev_kprobe.kp = kprobe_running();
 	kcb->prev_kprobe.status = kcb->kprobe_status;
 	kcb->prev_kprobe.saved_msr = kcb->kprobe_saved_msr;
 }
 
-static inline void restore_previous_kprobe(struct kprobe_ctlblk *kcb)
+static void __kprobes restore_previous_kprobe(struct kprobe_ctlblk *kcb)
 {
 	__get_cpu_var(current_kprobe) = kcb->prev_kprobe.kp;
 	kcb->kprobe_status = kcb->prev_kprobe.status;
 	kcb->kprobe_saved_msr = kcb->prev_kprobe.saved_msr;
 }
 
-static inline void set_current_kprobe(struct kprobe *p, struct pt_regs *regs,
+static void __kprobes set_current_kprobe(struct kprobe *p, struct pt_regs *regs,
 				struct kprobe_ctlblk *kcb)
 {
 	__get_cpu_var(current_kprobe) = p;
@@ -141,7 +141,7 @@ void __kprobes arch_prepare_kretprobe(struct kretprobe *rp,
 	}
 }
 
-static inline int kprobe_handler(struct pt_regs *regs)
+static int __kprobes kprobe_handler(struct pt_regs *regs)
 {
 	struct kprobe *p;
 	int ret = 0;
@@ -334,7 +334,7 @@ static void __kprobes resume_execution(struct kprobe *p, struct pt_regs *regs)
 		regs->nip = (unsigned long)p->addr + 4;
 }
 
-static inline int post_kprobe_handler(struct pt_regs *regs)
+static int __kprobes post_kprobe_handler(struct pt_regs *regs)
 {
 	struct kprobe *cur = kprobe_running();
 	struct kprobe_ctlblk *kcb = get_kprobe_ctlblk();
@@ -370,7 +370,7 @@ out:
 	return 1;
 }
 
-static inline int kprobe_fault_handler(struct pt_regs *regs, int trapnr)
+static int __kprobes kprobe_fault_handler(struct pt_regs *regs, int trapnr)
 {
 	struct kprobe *cur = kprobe_running();
 	struct kprobe_ctlblk *kcb = get_kprobe_ctlblk();
diff --git a/arch/powerpc/kernel/lparcfg.c b/arch/powerpc/kernel/lparcfg.c
index 1b73508ecb2b..2cbde865d4f5 100644
--- a/arch/powerpc/kernel/lparcfg.c
+++ b/arch/powerpc/kernel/lparcfg.c
@@ -37,7 +37,7 @@
 #include <asm/prom.h>
 #include <asm/vdso_datapage.h>
 
-#define MODULE_VERS "1.6"
+#define MODULE_VERS "1.7"
 #define MODULE_NAME "lparcfg"
 
 /* #define LPARCFG_DEBUG */
@@ -149,17 +149,17 @@ static void log_plpar_hcall_return(unsigned long rc, char *tag)
 	if (rc == 0)		/* success, return */
 		return;
 /* check for null tag ? */
-	if (rc == H_Hardware)
+	if (rc == H_HARDWARE)
 		printk(KERN_INFO
 		       "plpar-hcall (%s) failed with hardware fault\n", tag);
-	else if (rc == H_Function)
+	else if (rc == H_FUNCTION)
 		printk(KERN_INFO
 		       "plpar-hcall (%s) failed; function not allowed\n", tag);
-	else if (rc == H_Authority)
+	else if (rc == H_AUTHORITY)
 		printk(KERN_INFO
-		       "plpar-hcall (%s) failed; not authorized to this function\n",
-		       tag);
-	else if (rc == H_Parameter)
+		       "plpar-hcall (%s) failed; not authorized to this"
+		       " function\n", tag);
+	else if (rc == H_PARAMETER)
 		printk(KERN_INFO "plpar-hcall (%s) failed; Bad parameter(s)\n",
 		       tag);
 	else
@@ -209,7 +209,7 @@ static void h_pic(unsigned long *pool_idle_time, unsigned long *num_procs)
 	unsigned long dummy;
 	rc = plpar_hcall(H_PIC, 0, 0, 0, 0, pool_idle_time, num_procs, &dummy);
 
-	if (rc != H_Authority)
+	if (rc != H_AUTHORITY)
 		log_plpar_hcall_return(rc, "H_PIC");
 }
 
@@ -242,7 +242,7 @@ static void parse_system_parameter_string(struct seq_file *m)
 {
 	int call_status;
 
-	char *local_buffer = kmalloc(SPLPAR_MAXLENGTH, GFP_KERNEL);
+	unsigned char *local_buffer = kmalloc(SPLPAR_MAXLENGTH, GFP_KERNEL);
 	if (!local_buffer) {
 		printk(KERN_ERR "%s %s kmalloc failure at line %d \n",
 		       __FILE__, __FUNCTION__, __LINE__);
@@ -254,7 +254,8 @@ static void parse_system_parameter_string(struct seq_file *m)
 	call_status = rtas_call(rtas_token("ibm,get-system-parameter"), 3, 1,
 				NULL,
 				SPLPAR_CHARACTERISTICS_TOKEN,
-				__pa(rtas_data_buf));
+				__pa(rtas_data_buf),
+				RTAS_DATA_BUF_SIZE);
 	memcpy(local_buffer, rtas_data_buf, SPLPAR_MAXLENGTH);
 	spin_unlock(&rtas_data_buf_lock);
 
@@ -275,7 +276,7 @@ static void parse_system_parameter_string(struct seq_file *m)
 #ifdef LPARCFG_DEBUG
 		printk(KERN_INFO "success calling get-system-parameter \n");
 #endif
-		splpar_strlen = local_buffer[0] * 16 + local_buffer[1];
+		splpar_strlen = local_buffer[0] * 256 + local_buffer[1];
 		local_buffer += 2;	/* step over strlen value */
 
 		memset(workbuffer, 0, SPLPAR_MAXLENGTH);
@@ -529,13 +530,13 @@ static ssize_t lparcfg_write(struct file *file, const char __user * buf,
 	retval = plpar_hcall_norets(H_SET_PPP, *new_entitled_ptr,
 				    *new_weight_ptr);
 
-	if (retval == H_Success || retval == H_Constrained) {
+	if (retval == H_SUCCESS || retval == H_CONSTRAINED) {
 		retval = count;
-	} else if (retval == H_Busy) {
+	} else if (retval == H_BUSY) {
 		retval = -EBUSY;
-	} else if (retval == H_Hardware) {
+	} else if (retval == H_HARDWARE) {
 		retval = -EIO;
-	} else if (retval == H_Parameter) {
+	} else if (retval == H_PARAMETER) {
 		retval = -EINVAL;
 	} else {
 		printk(KERN_WARNING "%s: received unknown hv return code %ld",
diff --git a/arch/powerpc/kernel/pci_iommu.c b/arch/powerpc/kernel/pci_iommu.c
index c336f3e31cff..c1d95e14bbed 100644
--- a/arch/powerpc/kernel/pci_iommu.c
+++ b/arch/powerpc/kernel/pci_iommu.c
@@ -59,6 +59,25 @@ static inline struct iommu_table *devnode_table(struct device *dev)
 }
 
 
+static inline unsigned long device_to_mask(struct device *hwdev)
+{
+	struct pci_dev *pdev;
+
+	if (!hwdev) {
+		pdev = ppc64_isabridge_dev;
+		if (!pdev) /* This is the best guess we can do */
+			return 0xfffffffful;
+	} else
+		pdev = to_pci_dev(hwdev);
+
+	if (pdev->dma_mask)
+		return pdev->dma_mask;
+
+	/* Assume devices without mask can take 32 bit addresses */
+	return 0xfffffffful;
+}
+
+
 /* Allocates a contiguous real buffer and creates mappings over it.
  * Returns the virtual address of the buffer and sets dma_handle
  * to the dma address (mapping) of the first page.
@@ -67,7 +86,7 @@ static void *pci_iommu_alloc_coherent(struct device *hwdev, size_t size,
 			   dma_addr_t *dma_handle, gfp_t flag)
 {
 	return iommu_alloc_coherent(devnode_table(hwdev), size, dma_handle,
-			flag);
+			device_to_mask(hwdev), flag);
 }
 
 static void pci_iommu_free_coherent(struct device *hwdev, size_t size,
@@ -85,7 +104,8 @@ static void pci_iommu_free_coherent(struct device *hwdev, size_t size,
 static dma_addr_t pci_iommu_map_single(struct device *hwdev, void *vaddr,
 		size_t size, enum dma_data_direction direction)
 {
-	return iommu_map_single(devnode_table(hwdev), vaddr, size, direction);
+	return iommu_map_single(devnode_table(hwdev), vaddr, size,
+			        device_to_mask(hwdev), direction);
 }
 
 
@@ -100,7 +120,7 @@ static int pci_iommu_map_sg(struct device *pdev, struct scatterlist *sglist,
 		int nelems, enum dma_data_direction direction)
 {
 	return iommu_map_sg(pdev, devnode_table(pdev), sglist,
-			nelems, direction);
+			nelems, device_to_mask(pdev), direction);
 }
 
 static void pci_iommu_unmap_sg(struct device *pdev, struct scatterlist *sglist,
@@ -112,7 +132,19 @@ static void pci_iommu_unmap_sg(struct device *pdev, struct scatterlist *sglist,
 /* We support DMA to/from any memory page via the iommu */
 static int pci_iommu_dma_supported(struct device *dev, u64 mask)
 {
-	return 1;
+	struct iommu_table *tbl = devnode_table(dev);
+
+	if (!tbl || tbl->it_offset > mask) {
+		printk(KERN_INFO "Warning: IOMMU table offset too big for device mask\n");
+		if (tbl)
+			printk(KERN_INFO "mask: 0x%08lx, table offset: 0x%08lx\n",
+				mask, tbl->it_offset);
+		else
+			printk(KERN_INFO "mask: 0x%08lx, table unavailable\n",
+				mask);
+		return 0;
+	} else
+		return 1;
 }
 
 void pci_iommu_init(void)
diff --git a/arch/powerpc/kernel/ppc_ksyms.c b/arch/powerpc/kernel/ppc_ksyms.c
index dfa5398ab3c8..4b052ae5dc34 100644
--- a/arch/powerpc/kernel/ppc_ksyms.c
+++ b/arch/powerpc/kernel/ppc_ksyms.c
@@ -81,6 +81,7 @@ EXPORT_SYMBOL(strcat);
 EXPORT_SYMBOL(strlen);
 EXPORT_SYMBOL(strcmp);
 EXPORT_SYMBOL(strcasecmp);
+EXPORT_SYMBOL(strncasecmp);
 
 EXPORT_SYMBOL(csum_partial);
 EXPORT_SYMBOL(csum_partial_copy_generic);
diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index 4336390bcf34..1cb69e8fb0b1 100644
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c
@@ -62,7 +62,7 @@ static int __initdata dt_root_addr_cells;
 static int __initdata dt_root_size_cells;
 
 #ifdef CONFIG_PPC64
-static int __initdata iommu_is_off;
+int __initdata iommu_is_off;
 int __initdata iommu_force_on;
 unsigned long tce_alloc_start, tce_alloc_end;
 #endif
diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c
index d66c5e77fcff..7e4d54821a07 100644
--- a/arch/powerpc/kernel/prom_init.c
+++ b/arch/powerpc/kernel/prom_init.c
@@ -1528,12 +1528,11 @@ static int __init prom_find_machine_type(void)
 	 *    non-IBM designs !
 	 *  - it has /rtas
 	 */
-	len = prom_getprop(_prom->root, "model",
+	len = prom_getprop(_prom->root, "device_type",
 			   compat, sizeof(compat)-1);
 	if (len <= 0)
 		return PLATFORM_GENERIC;
-	compat[len] = 0;
-	if (strcmp(compat, "chrp"))
+	if (strncmp(compat, RELOC("chrp"), 4))
 		return PLATFORM_GENERIC;
 
 	/* Default to pSeries. We need to know if we are running LPAR */
diff --git a/arch/powerpc/kernel/rtas-proc.c b/arch/powerpc/kernel/rtas-proc.c
index 456286cf1d14..9c9ad1fa9cce 100644
--- a/arch/powerpc/kernel/rtas-proc.c
+++ b/arch/powerpc/kernel/rtas-proc.c
@@ -258,11 +258,11 @@ static int __init proc_rtas_init(void)
 	struct proc_dir_entry *entry;
 
 	if (!machine_is(pseries))
-		return 1;
+		return -ENODEV;
 
 	rtas_node = of_find_node_by_name(NULL, "rtas");
 	if (rtas_node == NULL)
-		return 1;
+		return -ENODEV;
 
 	entry = create_proc_entry("ppc64/rtas/progress", S_IRUGO|S_IWUSR, NULL);
 	if (entry)
diff --git a/arch/powerpc/kernel/rtas.c b/arch/powerpc/kernel/rtas.c
index 06636c927a7e..0112318213ab 100644
--- a/arch/powerpc/kernel/rtas.c
+++ b/arch/powerpc/kernel/rtas.c
@@ -578,18 +578,18 @@ static void rtas_percpu_suspend_me(void *info)
 	 * We use "waiting" to indicate our state.  As long
 	 * as it is >0, we are still trying to all join up.
 	 * If it goes to 0, we have successfully joined up and
-	 * one thread got H_Continue.  If any error happens,
+	 * one thread got H_CONTINUE.  If any error happens,
 	 * we set it to <0.
 	 */
 	local_irq_save(flags);
 	do {
 		rc = plpar_hcall_norets(H_JOIN);
 		smp_rmb();
-	} while (rc == H_Success && data->waiting > 0);
-	if (rc == H_Success)
+	} while (rc == H_SUCCESS && data->waiting > 0);
+	if (rc == H_SUCCESS)
 		goto out;
 
-	if (rc == H_Continue) {
+	if (rc == H_CONTINUE) {
 		data->waiting = 0;
 		data->args->args[data->args->nargs] =
 			rtas_call(ibm_suspend_me_token, 0, 1, NULL);
@@ -597,7 +597,7 @@ static void rtas_percpu_suspend_me(void *info)
 			plpar_hcall_norets(H_PROD,i);
 	} else {
 		data->waiting = -EBUSY;
-		printk(KERN_ERR "Error on H_Join hypervisor call\n");
+		printk(KERN_ERR "Error on H_JOIN hypervisor call\n");
 	}
 
 out:
@@ -624,7 +624,7 @@ static int rtas_ibm_suspend_me(struct rtas_args *args)
 		printk(KERN_ERR "Error doing global join\n");
 
 	/* Prod each CPU.  This won't hurt, and will wake
-	 * anyone we successfully put to sleep with H_Join
+	 * anyone we successfully put to sleep with H_JOIN.
 	 */
 	for_each_possible_cpu(i)
 		plpar_hcall_norets(H_PROD, i);
diff --git a/arch/powerpc/kernel/setup_32.c b/arch/powerpc/kernel/setup_32.c
index a72bf5dceeee..69ac25701344 100644
--- a/arch/powerpc/kernel/setup_32.c
+++ b/arch/powerpc/kernel/setup_32.c
@@ -50,7 +50,6 @@
 #include <asm/kgdb.h>
 #endif
 
-extern void platform_init(void);
 extern void bootx_init(unsigned long r4, unsigned long phys);
 
 boot_infos_t *boot_infos;
@@ -138,12 +137,7 @@ void __init machine_init(unsigned long dt_ptr, unsigned long phys)
 		strlcpy(cmd_line, CONFIG_CMDLINE, sizeof(cmd_line));
 #endif /* CONFIG_CMDLINE */
 
-#ifdef CONFIG_PPC_MULTIPLATFORM
 	probe_machine();
-#else
-	/* Base init based on machine type. Obsoloete, please kill ! */
-	platform_init();
-#endif
 
 #ifdef CONFIG_6xx
 	if (cpu_has_feature(CPU_FTR_CAN_DOZE) ||
diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c
index 59aa92cd6fa4..13e91c4d70a8 100644
--- a/arch/powerpc/kernel/setup_64.c
+++ b/arch/powerpc/kernel/setup_64.c
@@ -215,12 +215,10 @@ void __init early_setup(unsigned long dt_ptr)
 	/*
 	 * Initialize stab / SLB management except on iSeries
 	 */
-	if (!firmware_has_feature(FW_FEATURE_ISERIES)) {
-		if (cpu_has_feature(CPU_FTR_SLB))
-			slb_initialize();
-		else
-			stab_initialize(get_paca()->stab_real);
-	}
+	if (cpu_has_feature(CPU_FTR_SLB))
+		slb_initialize();
+	else if (!firmware_has_feature(FW_FEATURE_ISERIES))
+		stab_initialize(get_paca()->stab_real);
 
 	DBG(" <- early_setup()\n");
 }
diff --git a/arch/powerpc/kernel/sysfs.c b/arch/powerpc/kernel/sysfs.c
index 73560ef6f802..ed737cacf92d 100644
--- a/arch/powerpc/kernel/sysfs.c
+++ b/arch/powerpc/kernel/sysfs.c
@@ -279,7 +279,7 @@ static void unregister_cpu_online(unsigned int cpu)
 }
 #endif /* CONFIG_HOTPLUG_CPU */
 
-static int __devinit sysfs_cpu_notify(struct notifier_block *self,
+static int sysfs_cpu_notify(struct notifier_block *self,
 				      unsigned long action, void *hcpu)
 {
 	unsigned int cpu = (unsigned int)(long)hcpu;
@@ -297,7 +297,7 @@ static int __devinit sysfs_cpu_notify(struct notifier_block *self,
 	return NOTIFY_OK;
 }
 
-static struct notifier_block __devinitdata sysfs_cpu_nb = {
+static struct notifier_block sysfs_cpu_nb = {
 	.notifier_call	= sysfs_cpu_notify,
 };
 
diff --git a/arch/powerpc/kernel/systbl.S b/arch/powerpc/kernel/systbl.S
index 1ad55f0466fd..0b98eea73c5e 100644
--- a/arch/powerpc/kernel/systbl.S
+++ b/arch/powerpc/kernel/systbl.S
@@ -322,3 +322,11 @@ SYSCALL(spu_create)
 COMPAT_SYS(pselect6)
 COMPAT_SYS(ppoll)
 SYSCALL(unshare)
+SYSCALL(splice)
+SYSCALL(tee)
+SYSCALL(vmsplice)
+
+/*
+ * please add new calls to arch/powerpc/platforms/cell/spu_callbacks.c
+ * as well when appropriate.
+ */
diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c
index 4cbde211eb69..064a52564692 100644
--- a/arch/powerpc/kernel/traps.c
+++ b/arch/powerpc/kernel/traps.c
@@ -228,7 +228,7 @@ void system_reset_exception(struct pt_regs *regs)
  */
 static inline int check_io_access(struct pt_regs *regs)
 {
-#ifdef CONFIG_PPC_PMAC
+#if defined(CONFIG_PPC_PMAC) && defined(CONFIG_PPC32)
 	unsigned long msr = regs->msr;
 	const struct exception_table_entry *entry;
 	unsigned int *nip = (unsigned int *)regs->nip;
@@ -261,7 +261,7 @@ static inline int check_io_access(struct pt_regs *regs)
 			return 1;
 		}
 	}
-#endif /* CONFIG_PPC_PMAC */
+#endif /* CONFIG_PPC_PMAC && CONFIG_PPC32 */
 	return 0;
 }
 
@@ -308,8 +308,8 @@ platform_machine_check(struct pt_regs *regs)
 
 void machine_check_exception(struct pt_regs *regs)
 {
-#ifdef CONFIG_PPC64
 	int recover = 0;
+	unsigned long reason = get_mc_reason(regs);
 
 	/* See if any machine dependent calls */
 	if (ppc_md.machine_check_exception)
@@ -317,8 +317,6 @@ void machine_check_exception(struct pt_regs *regs)
 
 	if (recover)
 		return;
-#else
-	unsigned long reason = get_mc_reason(regs);
 
 	if (user_mode(regs)) {
 		regs->msr |= MSR_RI;
@@ -462,7 +460,6 @@ void machine_check_exception(struct pt_regs *regs)
 	 * additional info, e.g. bus error registers.
 	 */
 	platform_machine_check(regs);
-#endif /* CONFIG_PPC64 */
 
 	if (debugger_fault_handler(regs))
 		return;
diff --git a/arch/powerpc/kernel/vio.c b/arch/powerpc/kernel/vio.c
index 13c655ba2841..971020cf3f7d 100644
--- a/arch/powerpc/kernel/vio.c
+++ b/arch/powerpc/kernel/vio.c
@@ -202,7 +202,7 @@ static dma_addr_t vio_map_single(struct device *dev, void *vaddr,
 			  size_t size, enum dma_data_direction direction)
 {
 	return iommu_map_single(to_vio_dev(dev)->iommu_table, vaddr, size,
-			direction);
+			~0ul, direction);
 }
 
 static void vio_unmap_single(struct device *dev, dma_addr_t dma_handle,
@@ -216,7 +216,7 @@ static int vio_map_sg(struct device *dev, struct scatterlist *sglist,
 		int nelems, enum dma_data_direction direction)
 {
 	return iommu_map_sg(dev, to_vio_dev(dev)->iommu_table, sglist,
-			nelems, direction);
+			nelems, ~0ul, direction);
 }
 
 static void vio_unmap_sg(struct device *dev, struct scatterlist *sglist,
@@ -229,7 +229,7 @@ static void *vio_alloc_coherent(struct device *dev, size_t size,
 			   dma_addr_t *dma_handle, gfp_t flag)
 {
 	return iommu_alloc_coherent(to_vio_dev(dev)->iommu_table, size,
-			dma_handle, flag);
+			dma_handle, ~0ul, flag);
 }
 
 static void vio_free_coherent(struct device *dev, size_t size,